Percussion fuse



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Dec. 26, 1922.

E. J. T. WENNERSTROM. PERcussnoN Fuse. Fuso Nov. 27. 1920.

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WM /l TTS( 5MM 5y Win z, ma 1,440,191

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PERcussloN Fuss. Fuso Nov. 27. 1920.

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5, i W7@ WMM@ WM* Patented Dec. Z5, i922.

lJNlPED rarer ries.

ERNST JOHAN TORSTEN WENNEBSTRIV, OF IBOFORS, SWEDEN, ASSIGNOR TO AKTIE-BOLAGET BOFOBS, OF BOFORS, SWEDEN.

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Application filed November 27, 1920.

To all w 7mm z5 may concerny Be it lrnown that l, ERNST JOHAN TonsTLsNlllnNNnRs'rnM, a subject ont the King of Sweden, residing, at Bot'ors,Sweden, have 5 invented new and usefulimprovements in Percussion F uses,of which the following is a specification.

The present invention has [or its object an improvement in such by whichthe primer and the eetonator shell, prior to the discharge of the gun,are so disposed with relation to each other that explosion cannot talzeplace and by which at, or after the discharge of the gun, the primer ordetonator 15 shell is removed by means or spring` in such a manner thatthe primer will rest within the detonator shell, the invention beingcharacterized by one or more locking' devices arranged in such a mannerthat inde- `pendently of the spring they will loclr the primer or thedetonator shell in the new position in which said primer or detonatorsiell has been brought by the spring at or after the discharge of thegun. ln the accompanyingdrawing, forming part or this specii'ication,

Figure l is a vertical section taken approximately on the line l l ofFig. 3, the primer being' shown in its original position;

Fig. 2 illustrates the fuse with the primerl in a locled position withinthe detonator shell; and

Fig. 3 is a transverse section taken on the line lll-lll ot Fig. l.

Referring to these drawings, l is the tube body, 2 the detonator shell,3 the primer, il the armament shell which is comiocted with the primerand 5 a propelling spring which forces the primer into the detonatorshell atter the armament shell e has been disengaged from the ltwlrinc,`balls 6 in the well lmown manner.

According` to the invention one or more locking devices, which in thepreferred embodiment shown in the drawings, consist of balls 8 arrangedin cavities in the guidebody 9 for the hammer 7 in such a manner thatthey lock the hammer to the guide-body,

Serial No. 226,802.

until the armament shell er after the dis charge of the gun has beenpushed beyond the locking devices, when these latter', throughcentrifugal force, are thrown out of the cavities and release the hammerbut loclr the armament` shell, preventing this from returning` to itsoriginal position.

Having' now particularly described the nature of my invention and 'themanner ot its operation, what l claim is l. In a fuse having` a primerand a detonator shell adapted to initially occupy a safety positionrelatively to each other, a tube enclosing),` said members, a spring forchanging the rela-tive position of said primer and detonator shell sothat the primer is locatedwithin 'the detonator shell, the combinationof a locking device for firmly locling the primer and detonator shellindependent oif the spring in the position last mentioned..

2. In a fuse having` a primer and a detonator sh ll adapted to initiallyoccupy a safety position relatively to each other, a tube enclosing saidmembers, a spring 'for changing the relative position ot said primer anddetonator shell so that the primer is located within the detonatorshell, the coinbination of a locking; device' for lockingthe primerindependent ot the spring in the second position, said locking' device,before the discharge of the gun, being used Jfor locking' the hammer.

3. In a fuse having a primer and a detonator shell adapted to initiallyoccupy Aa` safety position relatively to each other, a tube enclosing`said members, a spring' for changing the relative position ot saidprimer and detonator shell so that the primer is located within thedetonator shell, the combination of a locking' device for firmlylocking' 'the primer and detonator shell independent of the spring` inthe position last mentioned, said locking device consisting of aplurality of balls.

In testimony whereof l have signed my name to this specification.

ERNST JOHAN TORSTEN WENNERSTRM.

